发明名称 |
POLYURETHANE POLYOLS AND COATINGS THEREOF HAVING REDUCED VISCOSITY |
摘要 |
The present invention relates to a film forming composition, a method of forming the composition, and application of the composition to coating formulations which provide a cured coating having acid rain resistance. A film-forming polyurethane polyol composition comprises a reaction product of an n-functional isocyanate (wherein n is a number ranging from about 2 to about 5) with at least one diol or triol or mixtures thereof and a compound containing isocyanate-reactive functional groups, preferably a monofunctional alcohol or thiol. The low viscosity polyurethane polyol of the present invention is typically cross-linked cured using a melamine to produce a cured coating which is highly acid etch resistant as well as having other desirable physical-mechanical properties. The coating compositions have improved flow characteristics compared to compositions containing polyurethane polyols prepared without the monofunctional alcohols or thiols.
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申请公布号 |
CA2225164(A1) |
申请公布日期 |
1999.06.18 |
申请号 |
CA19972225164 |
申请日期 |
1997.12.18 |
申请人 |
AKZO NOBEL N.V. |
发明人 |
WAGSTAFF, IAN;WALKER, FREDERICK HERBERT;YAHKIND, ALEXANDER LEO |
分类号 |
C08G18/24;C08G18/12;C08G18/28;C08G18/32;C09D175/04;(IPC1-7):C08G18/32 |
主分类号 |
C08G18/24 |
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